Door lock



April 1 1949. R. KULCHESKI 2,467,622

DOOR LOCK Filed May 2, 1945 2 Sheets-Sheet. 1

RALPHE KULCHESKI April 19, 1949.

R. KULCHESKI DOOR'LOCK 2 Shets-Sheet 2 Filed May 2, 1945 T m m I RALPHEKULCHESKI m. WWW

Patented Apr. 19, 1949 UNITED STATES PATENT OFFICE noon LOCK RalpheKulcheski, Fort Frances, Ontario, Canada Application May 2, 1945';serialNb. 591,429" 1 Claim. 01. 292- 170 cluding a slidable key-actuatedlocking bolt and a slidable push button actuated latch bolt, and theinvention has for itspriiiiary object to'provide a latchbolte'm'bodying' push buttonrneans for retracting the same from eithersideof the door and also"embcdyingmeans for lockingboth of said-pushbuttons'again'st'latch bolt operating movement. H I x A furtherobject'is-toprovide a door lock of this character of simple andpractical construction, which is efficient and reliable in operation,relatively inexpensive to manufacture, and otherwise well adapted forthe purposes for which the same is intended.

Other objects and advantages reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawings forming part hereof, wherein likereference numerals refer to like parts throughout, and in which:

Figure 1 is a fragmentary edge elevational view of a door showing thelock mounted in position therein,

Figure 2 is a side elevational View of the lock,

Figure 3 is a side elevational view of the lock encased in the casingwith the cover plate removed therefrom,

Figure 4 is a fragmentary transverse sectional view through the lockcasing and illustrating one of th push buttons for actuating the latchbolt,

Figure 5 is a fragmentary sectional view of the push button lockingmeans,

Figure 6 is a plan view of the guide plate for one of the push buttons,

Figure 7 is a side elevational view of the rockable locking member forthe push buttons,

Figure 8 is an edge elevational view thereof with part of the lockcasing shown in section,

Figure 9 isa plan view of one of the push buttons,

Figure 10 is a transverse sectional view taken substantially on a lineill-It of Figure 9,

Figure 11 is a side elevational view of the spring for the push buttonlocking member, and

Figure 12 is a perspective view of the locking plates for th door bolt.

Referring now to the drawings in detail, where-- in, for the purpose ofillustration, I have disclosed a preferred embodiment of the invention,the numeral 5 designates the lock case mortised in the edge of a door 6.

slidably mounted in the case is a door bolt l having a notch 8 in itslower edge adapted for receivin a key inserted in'the'key-hole opening12 on its upper edge and the plate It is forr ried.

with a laterally projecting stop I3 on its upper edge adapted forengaging the opposite edges of the lug i2 when the bolt 7 is moved intoits projected and retracted positions.

A leaf spring M is secured at one end in the top of the case 5 and hasits free end resting on top of the stop it to yieldably urge the plateIn in its lowermost position.

Accordingly, when a key is inserted in the lock and is received in thenotch 8 of the bolt 1, the plate ID will be raised upwardly to releasethe stop l3 from the lug I2 and the bolt 1 may then be moved into eitherits retracted or projected positions by the key, and upon removal of thekey the plate Ill will then be forced downwardly by the spring M withthe stop l3 positioned at one edge of the lug I2 to retain the bolt ineither of its aforesaid positions.

A latch bolt I5 is slidably mounted in the lower portion of the case 5,the front end of the latch bolt being slidably supported on the guideI1, the latch bolt being limited in its projected position by a lug l8positioned behind the guide.

The inner end of the latch bolt is slidably mounted in spaced parallelguides I9, between which a coil spring 20 is positioned and engaging theinner end of the latch bolt to project the same forwardly.

A pin 2! rises from the upper edge of the latch bolt [5 and On which aroller 22 is journaled, the roller having a groove 23 extendingcircumferentially thereof.

Openings 24 are formed in the opposite sides of the case 5 adjacent theroller 22 and through which the inner ends of extensible push buttons 25are movable, the inner ends of the push buttons being formed witharcuate or cam shaped ends 26 curved to seat in the groove 23 of theroller 22, the push buttons being adapted to engage opposite sides ofthe roller.

The cam shaped ends 25 of the push buttons 25 are slidably mounted inslots 21 of guide plates 28 secured to the outside of the case 5.

The outer ends of the push buttons are formed with heads 29 projectingoutwardly through dome-shaped cover plates 30, within which coil springs3| are positioned for engaging pins 32 carried by the push buttons toproject the push buttons outwardly in the position as shown in Figure 4of the drawings.

Accordingly, upon an inwardly actuated movement of the push buttons, thecam heads 26 will engage the roller 22 forwardly of the roller, wherebyto retract the latch bolt 15.

The push buttons 25 may be locked against inward depressing movement bymeans of a looking bar 33 pivoted intermediate its ends on a pin 34carried by the case and having one end 35 thereof adapted to beinterposed between said cam-shaped ends 26 in the path of the inwardmovement of the push buttons 25, whereby to function as a stop for thepush buttons to prevent engagement thereof With the roller 22.

A socket 36 is formed on one side of the bar 33 adapted for receiving asquare shaped shank 31 on a wing head 38 journaled in the case topivotally actuate the bar 33 for moving the end 35 from the positionshown in full lines in Figure 3 to its dotted line position out of thepath of the push buttons 25 to permit engagement of the push buttonswith the roller 22. The bar 33 is held in either of its aforesaidpositions by means of a coil spring 39 mounted on the pin 34 andfrictionally holding the bar against idle movement.

It is believed that the details of construction and manner of use of thedevice will be readily understood from the foregoing without furtherdetailed explanation.

What I claim is:

A door lock comprising a lock case adapted for mounting on a door, aspring-projected latch bolt slidably mounted in the case, a rollerjournaled on one side of the bolt, and a pair of push buttons carried bythe door upon opposite sides of said latch bolt and including laterallycurved heads adapted for engaging said roller to retract the bolt, and apivoted stop swingable to interpose the same between said push buttonsto obstruct movement thereof.

RALPHE KULCHESKI.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 655,543 Bohlen Aug. '7, 19001,451,464 Leczycki Apr. 10, 1923 1,576,007 Springer Mar. 9, 9261,956,098 Jacobson Apr. 24, 1934 2,058,163 Malone Oct. 20, 19362,186,666 Cereda. Jan. 9, 1940 2,317,699 Thompson Apr. 27, 1943

